Air valve



March 17. 1925.

T. S. STEPHENSON AIR VALVE Filed Sept- 6. 1921 a@ 2&5@

Patented Mar. 17V, 1925.

UNITED STATES PATENT ortica.- j

'rHoii/rass.y s'inPHENsoN, vor AL'iyoo-NA, rENNsYLvANIA. s

' y AIR VALVE.

iApplt'zazon filed.` September 6, 1921. Serial No. 498,701.

ing the compression stroke back to the intake line.

vide novel and practicalmeans for accomplishing the above result to'therebyalso prevent the gas lfrom mixing with the oil in ythe crank case and thus adding greatly to the life of the moto-r and motor bear-ings.

A further object is to provide convenient controlling means whereby the gaseous mixture from the crank-'case can be readily cut off from the intake pipe at the option of the driver of the car.

A still further object is to provide a controlling means that will not rattle7 leak gas or become disarranged on the car thus add-l ing greatly to the life of the mechanism and to the car to which it is attached.

lith these and other object in view which will be more readily apparent as the nature oi the invention is better understood,`the` lsame consists, in the novel construction, combination and arrange-ment of parts as will be hereinafter fully pointedv out, illustrated7 and claimed. ,y

It will be,v of course, understood by those skilled in the art to which this invention belongs that the sameis susceptible to various changes and modifications without departing from the spirit or scope of the invention, but a preferred and thoroughly practical embodiment of the inventionis shown in the accompanying drawings in which- Figure 1 is a perspective view of a gasoline engine of the Ford type having-my in.-

vention applied thereto and showing the in the form of a gasket having the central controlling rod extending upward.

FigureQ is a plan view of my improved Y gasoline vapor controlling devicewhich is adapted to be positioned between the flange of the intake pipe and the carburetor.

. .the drawings. Another object of the invention is to pro will not change the vice nor its eiciency.

Figure 3 is an endelevaftionof the parts `shown in F igure'2 of the drawings.

Figure 4 is ya sideelevatio'n of the'parts shown. in Figure 2 of the drawings.

'K Figure 5 is aplanview andzFigure 6 is a sectional view of the o-il Filling pipe used on the Ford oars, showing the manner ot confnecting the gas pipe to the oil filling pipe.

Figure 7 shows an end 4elevation of'the vvalve arrangement similar to Figure 3 showing` the position of the valve when closed,y

in dotted lines. l y v f Similar reference'numerals'refer to similar parts throughout theseveral figures of kIn carrying the' present invention into effect, it is not necessary'to change or alter ythe presentconstruction of the-intake manifold where the device'isintended to be used on old cars, and obviously with but little lchange in design the salme may be appliedA originally vto new cars in themanner which vfunctioning ofthe de- In ythe `form of the v'invention shown in the drawings kthe same essentially. comprisesI a shiftable valve l which may bein thel form of a disk having an offset ear 2 on the peripherythereo-f for receiving a manipulat ingrod 8, while one face' thereof may be C formedy with' a substantially arc shaped vrefcess 3a. 4 y

The said valve 'l may be suitably yheld to the seat 4 in the support 5 by any suitable and convenient means such for example las the pivoted screw 6 which may compress a 'coil spring 7 in the manner indicated in Figure-s 2 and 4 to force the valve disk against thekseat 4 withy enough pressure to maintain a tight ljoint between the rotating valve body a-nd'its seat.

The: support 5 which carries the valve l is preferably provided with a nipple portion 8 having an interior passage way 9, and is also provided with an extension l() arranged opening12 for registering with delivery coni i duit of the'carburetor andthe intake manifold of the engine, andl is also provided with the openings 13 in the ange portions 14 for lat right angles to the nipple y8 and provided '100.

receiving the usual bolts which couple the carburetor to the flanges et the intake manifold in the well known man-ner..

From Figures 1 and 2 it will be observed that the threaded nipple portion 8 cooperates with a. thimble nut to'clamp one end' ot a pipe or conduit 16 thereto, the said pipe being adapted to tap the oil filling pipe '17 of the car by means of lany suitable :and practical coupling such for instance as indie-ated at 18 in Figures 5 and 6. As shown in Figure 1, the present device is applied. to a motor of the Ford type7 and as is well known, the :oil pipe 17 thereof .directly communicates with the crank case, and hence gas accumulating therein, due to leakage around the pistons, may .be readily extracted through the oil pipe in the manner proposed.

As the present device is installed in the intake line it will be apparent that when the recess 3ai in the val-ve `disk establishes communication between the passageways =9 and 11 that the gas or vapor `caged within the crank case may be sucked up into `the intake line through the pipe 1 6. lhen it is desired to cut off the suppl-y oft gas through the pipe 16 the valve disk 1 may be. rotated .by the connect-ion 3 from the drivers seat so as ,to bring the recesses 3 out et registra-- tion with the opening 11 and thus close the a-'uxiliarly intake line. For the purpose ol limiting the movement of the valve .disk 1 .the support may be provided with abutments or stop projections 5l and 5b respectively arranged 90o apart, as :shown 'in Figures ,3 and 7 of the draw-ings the said stop A valve device for the intake line of internal combustion engines including a body adapted to be clamped between parts of said intake line, said body having an olset part provided' with an ,opening communicating with another opening` in the body which registers with the intake line, a depending valve seat member carried by said odset portion and also lia-ving a passageway adapted te communicate with the crank case of the .engine, a disk cooperating with .said valve seat member an-d having a recess for establishing communication between said passageway ot the o-tlset portion and with the passageway which communicates lwith the .crank case of the engine, fastening means including a spring for holding said disk to the valve seat memberymeans for rotating said disk, and projections carried by said valve seat member for cooperating `with'saidv means to limit the arc of movement of the dis-k.

In testimony whereof I have atlifxed my signature.

THOMAS S. STEPHENSLON. 

